2003 PONTIAC GRAND PRIX sensor

You’ll shift down to the next gear and have more power.
Notice: If your vehicle seems to start up rather
slowly, or if
it seems not to shift gears as you go
faster, something may be wrong with a transaxle system sensor.
If you drive very far that way, your
vehicle can be damaged. So, if
this happens,
have your vehicle serviced right away. Until then,
you can use SECOND
(2) when you are driving
less than
35 mph (55 km/h) and AUTOMATIC
OVERDRIVE (D) for higher speeds.
THIRD
(3): This position is also used for normal driving,
but
it offers more power and lower fuel economy than
AUTOMATIC OVERDRIVE
(@ ).
Here are some times you might choose THIRD (3)
instead of AUTOMATIC OVERDRIVE (a):
When driving on hilly, winding roads.
When towing a trailer, so there is less shifting
between gears.
When going down a steep hill.
When driving in non-highway scenarios
(i.e. city streets, etc.). SECOND
(2): This
position gives you more power but
lower fuel economy than THIRD
(3). You can use
SECOND (2) on hills. It can help control your speed as
you go down steep mountain roads, but then you
would also want to use your brakes
off and on.
Notice: Don’t drive in SECOND (2) for more than
25 miles (40 km), or at speeds over 55 mph
(90 km/h), or you can damage your transaxle.
Use THIRD
(3) or AUTOMATIC OVERDRIVE (D) as
much as possible. Don’t shift into SECOND
(2)
unless you are going slower than 65 mph (105 km/h)
or you can damage your engine.
FIRST
(1): This position gives you even more power
but lower fuel economy than SECOND (2). You can use
it on very steep hills, or in deep snow or mud. If the
shift lever is in
FIRST (I), the transaxle won’t shift into
first gear until the vehicle is going slowly enough.
Notice: If your front wheels won’t turn, don’t try to
drive. This might happen if you were stuck in
very deep sand or mud or were up against a solid
object. You could damage your transaxle. Also,
if you stop when going uphill, don’t hold your
vehicle there with only the accelerator pedal. This
could overheat and damage the transaxle. Use your
brakes to hold your vehicle in position on
a hill.
2-26

Daytime Running Lamps (DRL) /
Automatic Headlamp System
Daytime Running Lamps (BRL) can make it easier for
others
to see the front of y~ur vehicle during the
day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in the short
periods after dawn and before sunset. Fully functional
daytime running lamps are required on all vehicles
first sold in Canada.
A light sensor on top of the instrument panel makes the
DRL work,
so be sure it isn’t covered.
The DRL system will make your low-beam headlamps
come on at a reduced brightness when the following
conditions are met:
The ignition is on,
0 the exterior lamps control is off,
0 the transaxle is not in PARK (P) and
the parking brake is released. When
the DRL are on, only your low-beam headlamps,
at a reduced brightness, will be on. The taillamps,
sidemarker and other lamps won’t be on. Your
instrument panel won’t be lit up either.
When it’s dark enough outside, your headlamps
will
change to full brightness. The other lamps that come on
with your headlamps will also come on.
When it’s bright enough outside, the headlamps will go
out, and your low-beam headlamps will change to
the reduced brightness of DRL.
To idle your vehicle with the DRL off, set the parking
brake while the ignition is in OFF or LOCK. Then
start your vehicle. The DRL will stay
off until you shift
out of PARK (P) and release the parking brake.
As with any vehicle, you should turn on the regular
headlamps system when you need
it.
3-1 1

Safety Belt Reminder Light
When the key is turned to RUN, a chime will come on
for several seconds to remind people to fasten their
safety belts, unless the driver’s safety belt is already
buckled.
The safety belt light will
also come on and stay
on for several seconds,
then
it will flash for
several more.
If the driver’s belt
is already buckled, neither the chime
nor the light will come on.
Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the words SRS AIR BAG or the air
bag symbol. The system checks the air bag’s electrical
system for malfunctions. The light tells you
if there is an
electrical problem. The system check includes the air
bag sensors, the air bag modules, the wiring and
the crash sensing and diagnostic module. For more
information on the air bag system, see Supplemental
Restraint System (SRS)
on page 1-51.
SRS AIR BAG
United States
Canada
This light will come on when you start your vehicle, and
it will flash for a few seconds. Then the light should
go out. This means the system is ready.
3-26

I
21
22
I 27
Usaqe
Mass Air Flow (MAF), Heated
Sensors, Canister Purge, Boost
Solenoid
Spare
SDare
Spare lanition Module
Spare
trunk Release. Back-UD Lamps I
28 I AC Clutch, ABS Ignition
I I Remote Kevless Entrv. I
29 Theft-Deterient, Trip Computer,
HVAC Module, Security LED
30
Torque Converter Clutch (TCC) 31
Alt Sense idemarker Lamps,
Relays
Usage
Air Conditionina Clutch Diode I
9 I Coolina Fan
4
I
I 10 I Coolina Fan 2
v
1
I 11 I lanition Main I ~ ~
12 Cooling Fan 1
13 Air Conditioning Clutch
5-1 01